Following the unification of the Hejaz and Nejd kingdoms, the new state was named al-Mamlakah al-ʻArabīyah as-Suʻūdīyah (a transliteration of المملكة العربية السعودية in Arabic) by royal decree on 23 September 1932 by its founder, Abdulaziz Al Saud (Ibn Saud).
Although this is normally translated as "the Kingdom of Saudi Arabia" in English, The word "Saudi" is derived from the element as-Suʻūdīyah in the Arabic name of the country, which is a type of adjective known as a nisba, formed from the dynastic name of the Saudi royal family, the Al Saud (آل سعود).
2300 BC) discovered in a door-socket: "The ships of Dilmun brought him wood as tribute from foreign lands Thamud is the name of an ancient civilization in the Hejaz known from the 1st millennium BC to near the time of Muhammad.
He united the four regions into a single state through a series of conquests beginning in 1902 with the capture of Riyadh, the ancestral home of his family, the House of Saud.
Saudi Arabia has since been an absolute monarchy, effectively a hereditary dictatorship governed along Islamic lines.
Radiocarbon dating of these and other objects discovered indicate an age of about 9,000 years.
The various discoveries reflect the significance of the site as an important ancient civilization and gives it significant pre-historic importance with enough proof and detailed data for re-writing the Neolithic history of the Arabian Peninsula and Saudi Arabia in particular.
It is separated from Israel and Egypt by the Gulf of Aqaba.
It is the only nation with both a Red Sea coast and a Persian Gulf coast and most of its terrain consists of arid desert, lowland and mountains.(830,000 sq mi), Saudi Arabia is geographically the fifth-largest state in Asia and second-largest state in the Arab world after Algeria.Saudi Arabia is bordered by Jordan and Iraq to the north, Kuwait to the northeast, Qatar, Bahrain and the United Arab Emirates to the east, Oman to the southeast and Yemen to the south.The kingdom of Lihyan (Arabic: لحيان) or Dedan is an Ancient North Arabian kingdom.It was located in northwestern of the now-day Saudi Arabia, and is known for its Ancient North Arabian inscriptions dating to ca. Kindah was a tribal kingdom that was established in the Najd in central Arabia.The area of modern-day Saudi Arabia formerly consisted of four distinct regions: Hejaz, Najd and parts of Eastern Arabia (Al-Ahsa) and Southern Arabia ('Asir).